added challenge level text

src/states/PlayingState.cpp

@@ -269,7 +269,9 @@ void PlayingState::render(SDL_Renderer* renderer, float logicalScale, SDL_Rect l
                 challengeClearFx,
                 challengeClearOrder,
                 challengeClearElapsed,
-                challengeClearDuration
+                challengeClearDuration,
+                ctx.challengeStoryText,
+                ctx.challengeStoryAlpha ? *ctx.challengeStoryAlpha : 0.0f
         );
 
         // Reset to screen
@@ -363,7 +365,9 @@ void PlayingState::render(SDL_Renderer* renderer, float logicalScale, SDL_Rect l
             challengeClearFx,
             challengeClearOrder,
             challengeClearElapsed,
-            challengeClearDuration
+            challengeClearDuration,
+            ctx.challengeStoryText,
+            ctx.challengeStoryAlpha ? *ctx.challengeStoryAlpha : 0.0f
         );
     }
 }

src/states/State.h

@@ -73,6 +73,9 @@ struct StateContext {
     double* challengeClearFxElapsedMs = nullptr;
     double* challengeClearFxDurationMs = nullptr;
     std::vector<int>* challengeClearFxOrder = nullptr;
+    std::string* challengeStoryText = nullptr; // Per-level briefing string for Challenge mode
+    int* challengeStoryLevel = nullptr; // Cached level for the current story line
+    float* challengeStoryAlpha = nullptr; // Current render alpha for story text fade
     std::string* playerName = nullptr; // Shared player name buffer for highscores/options
     bool* fullscreenFlag = nullptr; // Tracks current fullscreen state when available
     std::function<void(bool)> applyFullscreen; // Allows states to request fullscreen changes